89 Brougham Dlegance Heater Issues
Cadillac
 

Cadillac Forums | Help Us Help You | Advertise | Cadillac Parts | Cadillac News | Cadillac Classifieds / (Old System)

Cadillac Technical Archive | Cadillac Dealers | Cadillac Reviews | Cadillac Dealer Reviews | Cadillac Vendors

CadillacForums.com is the premier Cadillac Forum on the internet. Registered Users do not see the above ads.
+ Reply to Thread
Results 1 to 3 of 3
RWD 19xx-1984 DeVille and Fleetwood,
1985-1996 Fleetwood and Brougham Forum Discussion, 89 Brougham Dlegance Heater Issues in Past Cadillac Vehicle Discussion; Hi Guys, I bought a 89 Brougham with the 307 4bl, only has 58`000KM original, the only issue is the ...
  1. #1
    JLanzino's Avatar
    JLanzino is offline Cadillac Owners Member
    Automobile(s): 1989 Cadillac Brougham d'Elegance
    Join Date
    Feb 2012
    Location
    Ontario Canada
    Posts
    22

    89 Brougham Dlegance Heater Issues

    Hi Guys,

    I bought a 89 Brougham with the 307 4bl, only has 58`000KM original, the only issue is the heater not working, the old fan was burned out, so I replaced it, still not working, but if I ground the new fan it will work with car on or off, this shouldn't happen right?

    Where would be a good starting place, any advise? I want to plate it but I need to repair this heater to get the safety

    Thanks guys

  2. Remove Advertisements
    CadillacForums.com
    Advertisements
     

  3. #2
    Robin Banx's Avatar
    Robin Banx is offline Cadillac Owners Fanatic
    Automobile(s): 1983 Fleetwood Brougham
    Join Date
    Dec 2007
    Location
    Vancouver, B.C. Canada
    Posts
    436

    Re: 89 Brougham Dlegance Heater Issues

    Sounds like the heater control module (on top of the heater box in the engine room) has failed. I've had the same problem with both of mine (81 & 83). Can still be found in wrecking yards for about $25.00.

    Cheers............R.

  4. #3
    carnut is offline Cadillac Owners Master
    Automobile(s): 1988 Allante' (sold), 1984 Eldorado, 84 Sedan DeVille
    Join Date
    Feb 2003
    Location
    california
    Age
    67
    Posts
    5,990

    Re: 89 Brougham Dlegance Heater Issues

    I'm confused? you have no blower or no hot air? Does it blow in the defrost mode? An inop. fan is usually the ground wire from the underhood power module. That ground wire goes to the center of the firewall by the hood bumper, Remove it and clean it. The motor itself screws into plastic and that screw can be loose, corroded preventing a good ground. If I recall the 307 had a hot water valve that requires vacuum to close it. Are the hoses to the heater core both hot?

Quick Reply Quick Reply

Register Now

Please enter the name by which you would like to log-in and be known on this site.
If you do not want to register, fill this field only and the name will be used as user name for your post.

Please enter a password for your user account. Note that passwords are case-sensitive.

Please enter a valid email address for yourself.

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Bookmarks

Cadillac Posting Rules

  • You may post new threads
  • You may post replies
  • You may not post attachments
  • You may not edit your posts
Read about Lincoln | Buick | Kia Forte Forum
Need products for your Cadillac? Check out your options at the links below:

custom floor mats | Cadillac Chrome and Black Chrome Wheels | window tinting